Sony Ericsson GR47 Integrator's Manual page 79

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To activate or deactivate the Flow Control mechanism, switch
S501 must be set as presented in Table 7 and Table 8
respectively.
If you intend to use the serial interface using the header
connector (JP 301) provided on the developer's board, notice
that appropriate CMOS voltage levels as defined by VDIG in
§3.3 Power Interface shall be connected to the appropriate pins
as follows:
LZT 123 7589 R2B
USING THE UNIVERSAL DEVELOPER'S KIT
Switch Position Function
Position 1 DTMS
Position 2 CTS
Position 3 DTR
Position 4 DFMS
Position 5 RTS
Position 6 DSR
Position 7 Module_Pwr_En_B
WAKE
Table 9: S501 Settings to enable HW Flow Control
Switch Function
Position
Position 1 DTMS
Position 2 CTS
Position 3 DTR
Position 4 DFMS
Position 5 RTS
Position 6 DSR
Position 7 Module_Pwr_En_B
WAKE
Table 10: S501 Settings to disable HW Flow Control
Pin Signal Description
23 DCD Data Carrier Detect
25 CTS Clear To Send
26 DTR Data Terminal Ready
27 TD Serial Data To Module (DTMS)
28 RTS Request To Send
30 RD Serial Data From Module (DFMS)
Table 11: Direction of Serial Data Signals
DM-xx CM-4x GM-41
ON ON ON
ON ON ON
ON ON ON
ON ON ON
ON ON ON
ON ON ON
ON ON
OFF
DM-xx CM-4x GM-41
ON ON ON
OFF OFF OFF
ON ON ON
ON ON ON
OFF OFF OFF
ON ON ON
ON ON
OFF
O
I
I
GM/GR
47/48
ON
ON
ON
ON
ON
ON
ON
GM/GR
47/48
ON
OFF
ON
ON
OFF
ON
ON
Direction
O
I
O
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